Question

what kind of triangle is this?
16
15
15
equilateral
isosceles but not equilateral
scalene

Explanation:

Step1: Recall triangle definitions

• Equilateral: All 3 sides equal.
• Isosceles: At least 2 sides equal.
• Scalene: All 3 sides different.

Step2: Analyze given side lengths

The triangle has sides 16, 15, 15. Two sides (15, 15) are equal, and one (16) is different. So it's isosceles (since at least 2 sides equal) but not equilateral (since not all 3 equal).

Answer:

Isosceles but not equilateral